The page leaves me in the dark as to which MEP is affiliated with which EU party, and which local party. People might want to contact their "own" MEPs, might be unwilling to talk to people from a certain party etc.

I understand that showing all local MEPs was a conscious decision to avoid the appearance of Wikimedia being politically non-neutral, or non-inclusive towards people with certain political views; but I don't think just displaying the party names in the dropdown would be problematic.